Boat-propelling device.



I N. P. LOOMER. BOAT PROPELLING- DEVICE.

APPLIOATION FILED JUNE 26, 1908.

923,283. Patented June 1, 1909.

BY WW 0M ATTORNEY v NELSON LOOMER, or *LETELLIER, i-L MroBAQc NAnA.

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Specification 5r Letters Patent.

. P tented m -1m. I

Application filed Ju ne 26, 1903. Serial ital-440,620.

Tb all whom-it may com B'eitknown that I, Nnnsox 1*"..Lo'omm, I citizen of the Dominionof Canada, residing at Letellier; in the ,lrbvince;. of Manitoba, "Canada, have invented a new and useful Im-- provementin Boat-Propelling Devices,' of' 3 and the blade so angled .is-press'ed throng ii which the following is a specification.

This invention' relates to an improved means-for propelling a boat by means of a vertically moved blade, which ivotally mounted to'incline to iea'ch'side of the-hon zontal plane.

The device is particularly designed as an.

auxiliary for small saiiboats, but may be 1 susceptible .'of developmentfor vessels of'a' A .blade,.i-n the development" of-the device 1:.

larger size."

. "The device is described in the follow .mg specification, "reference being. made to the drawings by which .it. is accompanied, in I which: l lgure l is a perspective View showing the appllcatlon of the device to the stern of' a boat, and F ig'. 2,. aside elevation showing by.

Y dot and dash-lines the reversed incline of the flat blade 2, preferably shaped as a"syn1- her 4 which'rnember is connected tot'he hull.

of a-boat in a-manner thatv will permit of a blade. I

'The propelling means consists of a thin metrical trapezoid; which blade is pivotalFy mount'ed along the smaller-of its parallel edges in a V shaped notch 3 in a vertical memreciprocating -vertical movement being imarted to it as indicated'by the dot anddash es in Fig. 2. This may appropriately be i done by suspending the upper end of the Each end of the blade stayed by diagoii'al braces 8. to the back edge of the member 4 the connections to; the blade, 2 andto the member 4 being such as willipermit of -verti-.

: cal movement,

down moveinentis im' arted-to, the vertical member 4 by-means 0 power applied to. t e

inboard end of the-lever 5, and. under this movement the angle of the lane-of the blade 2 is reversed within the limits of the V not .1:

the water imparting a forwardnmovementl' -to the boat; i

' Springs 10 may be introduced somewhat as shownin-Fig. 2: to cushion the check o5 the blade'Z in. theV notch'3. p

" As'sho-Wn by dot and dash lines 'in'Flg. i

the member 4; may be reversed when; desirw- Although: .the drawing shows. only 0a le to make use of more vention and the mannerof'itsapplication and use, I hereby declare that what I-zclag'ir'n as new and desire to be-protected in by Letters Patent; is

1; Asia'propelli meansjforjboats, ahfori .Zontally. disposed. b ade ivotallyhingedi to avertical member radia y connected to the. hull-of a boat,- and means for imparting a. vertical movement-t0 thezvertical member.

2. As'a propelling means for boats,:a':horiz'ontally dis 'osed bladepivotally mounted on a vertica y disposedQmember-which'vertical member is connected byapproximately parallel links tothe hullof the boat inia mam nerv that will permit of vertical movement vbeingimparted to the vertically. disposed p member, "means: for limiting-arid Ic ushi'o'nin member 4 by a pin-connection to theouterthe angular'movement -of the-,blade," an

end of a 'lever 5, which lever isju'lcrumed v movement-to the-vertical member;

me'ans'for imparting a reciprocating vertical 3 As a propelhn means-for boats,'a lever pivotally mounted to the; afteIirail-of a'lb'oat mfa manner that will permit of movement-1n.

a vertical plane, a" verticallydisposedmexn ber in-connected -to the outboard end .of said ever and radially-connected'at its lower end to the hull of-the boat in a manner that will permit of movementcorresponding to the lever from which it is suspended said vertically disposed member having& V shaped notch in its after edge, a horizontally disposed blade In testimony whereof I have signed my mounted in thenotch of the vertically dis-- name to this speeifieetion in the presence 10 posed membeil' and sluseeptikxle of ariigulai of two subscribing witnesses. movement Wit li-nthe imits 0 its note 1, an

5 diagonal 'sta'ys connecting the outer ends of NELSON LOOMER' the blade to 'the vertically disposed member Witnesses: in a. manner that will permit of the vertical JOHN COUGHLAN, movement of the blade. l CARI; R. LOOP, 

